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TARGET_K64F/TOOLCHAIN_IAR/fsl_pit.h@172:65be27845400, 2019-02-20 (annotated)
- Committer:
- AnnaBridge
- Date:
- Wed Feb 20 20:53:29 2019 +0000
- Revision:
- 172:65be27845400
- Parent:
- 171:3a7713b1edbc
mbed library release version 165
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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AnnaBridge | 145:64910690c574 | 1 | /* |
AnnaBridge | 145:64910690c574 | 2 | * Copyright (c) 2015, Freescale Semiconductor, Inc. |
AnnaBridge | 145:64910690c574 | 3 | * All rights reserved. |
AnnaBridge | 145:64910690c574 | 4 | * |
AnnaBridge | 145:64910690c574 | 5 | * Redistribution and use in source and binary forms, with or without modification, |
AnnaBridge | 145:64910690c574 | 6 | * are permitted provided that the following conditions are met: |
AnnaBridge | 145:64910690c574 | 7 | * |
AnnaBridge | 145:64910690c574 | 8 | * o Redistributions of source code must retain the above copyright notice, this list |
AnnaBridge | 145:64910690c574 | 9 | * of conditions and the following disclaimer. |
AnnaBridge | 145:64910690c574 | 10 | * |
AnnaBridge | 145:64910690c574 | 11 | * o Redistributions in binary form must reproduce the above copyright notice, this |
AnnaBridge | 145:64910690c574 | 12 | * list of conditions and the following disclaimer in the documentation and/or |
AnnaBridge | 145:64910690c574 | 13 | * other materials provided with the distribution. |
AnnaBridge | 145:64910690c574 | 14 | * |
AnnaBridge | 145:64910690c574 | 15 | * o Neither the name of Freescale Semiconductor, Inc. nor the names of its |
AnnaBridge | 145:64910690c574 | 16 | * contributors may be used to endorse or promote products derived from this |
AnnaBridge | 145:64910690c574 | 17 | * software without specific prior written permission. |
AnnaBridge | 145:64910690c574 | 18 | * |
AnnaBridge | 145:64910690c574 | 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
AnnaBridge | 145:64910690c574 | 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
AnnaBridge | 145:64910690c574 | 21 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
AnnaBridge | 145:64910690c574 | 22 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR |
AnnaBridge | 145:64910690c574 | 23 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
AnnaBridge | 145:64910690c574 | 24 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
AnnaBridge | 145:64910690c574 | 25 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
AnnaBridge | 145:64910690c574 | 26 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
AnnaBridge | 145:64910690c574 | 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
AnnaBridge | 145:64910690c574 | 28 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
AnnaBridge | 145:64910690c574 | 29 | */ |
AnnaBridge | 145:64910690c574 | 30 | #ifndef _FSL_PIT_H_ |
AnnaBridge | 145:64910690c574 | 31 | #define _FSL_PIT_H_ |
AnnaBridge | 145:64910690c574 | 32 | |
AnnaBridge | 145:64910690c574 | 33 | #include "fsl_common.h" |
AnnaBridge | 145:64910690c574 | 34 | |
AnnaBridge | 145:64910690c574 | 35 | /*! |
AnnaBridge | 145:64910690c574 | 36 | * @addtogroup pit |
AnnaBridge | 145:64910690c574 | 37 | * @{ |
AnnaBridge | 145:64910690c574 | 38 | */ |
AnnaBridge | 145:64910690c574 | 39 | |
AnnaBridge | 145:64910690c574 | 40 | |
AnnaBridge | 145:64910690c574 | 41 | /******************************************************************************* |
AnnaBridge | 145:64910690c574 | 42 | * Definitions |
AnnaBridge | 145:64910690c574 | 43 | ******************************************************************************/ |
AnnaBridge | 145:64910690c574 | 44 | |
AnnaBridge | 145:64910690c574 | 45 | /*! @name Driver version */ |
AnnaBridge | 145:64910690c574 | 46 | /*@{*/ |
AnnaBridge | 145:64910690c574 | 47 | #define FSL_PIT_DRIVER_VERSION (MAKE_VERSION(2, 0, 0)) /*!< Version 2.0.0 */ |
AnnaBridge | 145:64910690c574 | 48 | /*@}*/ |
AnnaBridge | 145:64910690c574 | 49 | |
AnnaBridge | 145:64910690c574 | 50 | /*! |
AnnaBridge | 145:64910690c574 | 51 | * @brief List of PIT channels |
AnnaBridge | 145:64910690c574 | 52 | * @note Actual number of available channels is SoC dependent |
AnnaBridge | 145:64910690c574 | 53 | */ |
AnnaBridge | 145:64910690c574 | 54 | typedef enum _pit_chnl |
AnnaBridge | 145:64910690c574 | 55 | { |
AnnaBridge | 145:64910690c574 | 56 | kPIT_Chnl_0 = 0U, /*!< PIT channel number 0*/ |
AnnaBridge | 145:64910690c574 | 57 | kPIT_Chnl_1, /*!< PIT channel number 1 */ |
AnnaBridge | 145:64910690c574 | 58 | kPIT_Chnl_2, /*!< PIT channel number 2 */ |
AnnaBridge | 145:64910690c574 | 59 | kPIT_Chnl_3, /*!< PIT channel number 3 */ |
AnnaBridge | 145:64910690c574 | 60 | } pit_chnl_t; |
AnnaBridge | 145:64910690c574 | 61 | |
AnnaBridge | 145:64910690c574 | 62 | /*! @brief List of PIT interrupts */ |
AnnaBridge | 145:64910690c574 | 63 | typedef enum _pit_interrupt_enable |
AnnaBridge | 145:64910690c574 | 64 | { |
AnnaBridge | 145:64910690c574 | 65 | kPIT_TimerInterruptEnable = PIT_TCTRL_TIE_MASK, /*!< Timer interrupt enable*/ |
AnnaBridge | 145:64910690c574 | 66 | } pit_interrupt_enable_t; |
AnnaBridge | 145:64910690c574 | 67 | |
AnnaBridge | 145:64910690c574 | 68 | /*! @brief List of PIT status flags */ |
AnnaBridge | 145:64910690c574 | 69 | typedef enum _pit_status_flags |
AnnaBridge | 145:64910690c574 | 70 | { |
AnnaBridge | 145:64910690c574 | 71 | kPIT_TimerFlag = PIT_TFLG_TIF_MASK, /*!< Timer flag */ |
AnnaBridge | 145:64910690c574 | 72 | } pit_status_flags_t; |
AnnaBridge | 145:64910690c574 | 73 | |
AnnaBridge | 145:64910690c574 | 74 | /*! |
AnnaBridge | 145:64910690c574 | 75 | * @brief PIT configuration structure |
AnnaBridge | 145:64910690c574 | 76 | * |
AnnaBridge | 145:64910690c574 | 77 | * This structure holds the configuration settings for the PIT peripheral. To initialize this |
AnnaBridge | 145:64910690c574 | 78 | * structure to reasonable defaults, call the PIT_GetDefaultConfig() function and pass a |
AnnaBridge | 145:64910690c574 | 79 | * pointer to your config structure instance. |
AnnaBridge | 145:64910690c574 | 80 | * |
AnnaBridge | 145:64910690c574 | 81 | * The configuration structure can be made constant so it resides in flash. |
AnnaBridge | 145:64910690c574 | 82 | */ |
AnnaBridge | 145:64910690c574 | 83 | typedef struct _pit_config |
AnnaBridge | 145:64910690c574 | 84 | { |
AnnaBridge | 145:64910690c574 | 85 | bool enableRunInDebug; /*!< true: Timers run in debug mode; false: Timers stop in debug mode */ |
AnnaBridge | 145:64910690c574 | 86 | } pit_config_t; |
AnnaBridge | 145:64910690c574 | 87 | |
AnnaBridge | 145:64910690c574 | 88 | /******************************************************************************* |
AnnaBridge | 145:64910690c574 | 89 | * API |
AnnaBridge | 145:64910690c574 | 90 | ******************************************************************************/ |
AnnaBridge | 145:64910690c574 | 91 | |
AnnaBridge | 145:64910690c574 | 92 | #if defined(__cplusplus) |
AnnaBridge | 145:64910690c574 | 93 | extern "C" { |
AnnaBridge | 145:64910690c574 | 94 | #endif |
AnnaBridge | 145:64910690c574 | 95 | |
AnnaBridge | 145:64910690c574 | 96 | /*! |
AnnaBridge | 145:64910690c574 | 97 | * @name Initialization and deinitialization |
AnnaBridge | 145:64910690c574 | 98 | * @{ |
AnnaBridge | 145:64910690c574 | 99 | */ |
AnnaBridge | 145:64910690c574 | 100 | |
AnnaBridge | 145:64910690c574 | 101 | /*! |
AnnaBridge | 145:64910690c574 | 102 | * @brief Ungates the PIT clock, enables the PIT module, and configures the peripheral for basic operations. |
AnnaBridge | 145:64910690c574 | 103 | * |
AnnaBridge | 145:64910690c574 | 104 | * @note This API should be called at the beginning of the application using the PIT driver. |
AnnaBridge | 145:64910690c574 | 105 | * |
AnnaBridge | 145:64910690c574 | 106 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 107 | * @param config Pointer to the user's PIT config structure |
AnnaBridge | 145:64910690c574 | 108 | */ |
AnnaBridge | 145:64910690c574 | 109 | void PIT_Init(PIT_Type *base, const pit_config_t *config); |
AnnaBridge | 145:64910690c574 | 110 | |
AnnaBridge | 145:64910690c574 | 111 | /*! |
AnnaBridge | 145:64910690c574 | 112 | * @brief Gates the PIT clock and disables the PIT module. |
AnnaBridge | 145:64910690c574 | 113 | * |
AnnaBridge | 145:64910690c574 | 114 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 115 | */ |
AnnaBridge | 145:64910690c574 | 116 | void PIT_Deinit(PIT_Type *base); |
AnnaBridge | 145:64910690c574 | 117 | |
AnnaBridge | 145:64910690c574 | 118 | /*! |
AnnaBridge | 145:64910690c574 | 119 | * @brief Fills in the PIT configuration structure with the default settings. |
AnnaBridge | 145:64910690c574 | 120 | * |
AnnaBridge | 145:64910690c574 | 121 | * The default values are as follows. |
AnnaBridge | 145:64910690c574 | 122 | * @code |
AnnaBridge | 145:64910690c574 | 123 | * config->enableRunInDebug = false; |
AnnaBridge | 145:64910690c574 | 124 | * @endcode |
AnnaBridge | 145:64910690c574 | 125 | * @param config Pointer to the onfiguration structure. |
AnnaBridge | 145:64910690c574 | 126 | */ |
AnnaBridge | 145:64910690c574 | 127 | static inline void PIT_GetDefaultConfig(pit_config_t *config) |
AnnaBridge | 145:64910690c574 | 128 | { |
AnnaBridge | 145:64910690c574 | 129 | assert(config); |
AnnaBridge | 145:64910690c574 | 130 | |
AnnaBridge | 145:64910690c574 | 131 | /* Timers are stopped in Debug mode */ |
AnnaBridge | 145:64910690c574 | 132 | config->enableRunInDebug = false; |
AnnaBridge | 145:64910690c574 | 133 | } |
AnnaBridge | 145:64910690c574 | 134 | |
AnnaBridge | 145:64910690c574 | 135 | #if defined(FSL_FEATURE_PIT_HAS_CHAIN_MODE) && FSL_FEATURE_PIT_HAS_CHAIN_MODE |
AnnaBridge | 145:64910690c574 | 136 | |
AnnaBridge | 145:64910690c574 | 137 | /*! |
AnnaBridge | 145:64910690c574 | 138 | * @brief Enables or disables chaining a timer with the previous timer. |
AnnaBridge | 145:64910690c574 | 139 | * |
AnnaBridge | 145:64910690c574 | 140 | * When a timer has a chain mode enabled, it only counts after the previous |
AnnaBridge | 145:64910690c574 | 141 | * timer has expired. If the timer n-1 has counted down to 0, counter n |
AnnaBridge | 145:64910690c574 | 142 | * decrements the value by one. Each timer is 32-bits, which allows the developers |
AnnaBridge | 145:64910690c574 | 143 | * to chain timers together and form a longer timer (64-bits and larger). The first timer |
AnnaBridge | 145:64910690c574 | 144 | * (timer 0) can't be chained to any other timer. |
AnnaBridge | 145:64910690c574 | 145 | * |
AnnaBridge | 145:64910690c574 | 146 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 147 | * @param channel Timer channel number which is chained with the previous timer |
AnnaBridge | 145:64910690c574 | 148 | * @param enable Enable or disable chain. |
AnnaBridge | 145:64910690c574 | 149 | * true: Current timer is chained with the previous timer. |
AnnaBridge | 145:64910690c574 | 150 | * false: Timer doesn't chain with other timers. |
AnnaBridge | 145:64910690c574 | 151 | */ |
AnnaBridge | 145:64910690c574 | 152 | static inline void PIT_SetTimerChainMode(PIT_Type *base, pit_chnl_t channel, bool enable) |
AnnaBridge | 145:64910690c574 | 153 | { |
AnnaBridge | 145:64910690c574 | 154 | if (enable) |
AnnaBridge | 145:64910690c574 | 155 | { |
AnnaBridge | 145:64910690c574 | 156 | base->CHANNEL[channel].TCTRL |= PIT_TCTRL_CHN_MASK; |
AnnaBridge | 145:64910690c574 | 157 | } |
AnnaBridge | 145:64910690c574 | 158 | else |
AnnaBridge | 145:64910690c574 | 159 | { |
AnnaBridge | 145:64910690c574 | 160 | base->CHANNEL[channel].TCTRL &= ~PIT_TCTRL_CHN_MASK; |
AnnaBridge | 145:64910690c574 | 161 | } |
AnnaBridge | 145:64910690c574 | 162 | } |
AnnaBridge | 145:64910690c574 | 163 | |
AnnaBridge | 145:64910690c574 | 164 | #endif /* FSL_FEATURE_PIT_HAS_CHAIN_MODE */ |
AnnaBridge | 145:64910690c574 | 165 | |
AnnaBridge | 145:64910690c574 | 166 | /*! @}*/ |
AnnaBridge | 145:64910690c574 | 167 | |
AnnaBridge | 145:64910690c574 | 168 | /*! |
AnnaBridge | 145:64910690c574 | 169 | * @name Interrupt Interface |
AnnaBridge | 145:64910690c574 | 170 | * @{ |
AnnaBridge | 145:64910690c574 | 171 | */ |
AnnaBridge | 145:64910690c574 | 172 | |
AnnaBridge | 145:64910690c574 | 173 | /*! |
AnnaBridge | 145:64910690c574 | 174 | * @brief Enables the selected PIT interrupts. |
AnnaBridge | 145:64910690c574 | 175 | * |
AnnaBridge | 145:64910690c574 | 176 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 177 | * @param channel Timer channel number |
AnnaBridge | 145:64910690c574 | 178 | * @param mask The interrupts to enable. This is a logical OR of members of the |
AnnaBridge | 145:64910690c574 | 179 | * enumeration ::pit_interrupt_enable_t |
AnnaBridge | 145:64910690c574 | 180 | */ |
AnnaBridge | 145:64910690c574 | 181 | static inline void PIT_EnableInterrupts(PIT_Type *base, pit_chnl_t channel, uint32_t mask) |
AnnaBridge | 145:64910690c574 | 182 | { |
AnnaBridge | 145:64910690c574 | 183 | base->CHANNEL[channel].TCTRL |= mask; |
AnnaBridge | 145:64910690c574 | 184 | } |
AnnaBridge | 145:64910690c574 | 185 | |
AnnaBridge | 145:64910690c574 | 186 | /*! |
AnnaBridge | 145:64910690c574 | 187 | * @brief Disables the selected PIT interrupts. |
AnnaBridge | 145:64910690c574 | 188 | * |
AnnaBridge | 145:64910690c574 | 189 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 190 | * @param channel Timer channel number |
AnnaBridge | 145:64910690c574 | 191 | * @param mask The interrupts to disable. This is a logical OR of members of the |
AnnaBridge | 145:64910690c574 | 192 | * enumeration ::pit_interrupt_enable_t |
AnnaBridge | 145:64910690c574 | 193 | */ |
AnnaBridge | 145:64910690c574 | 194 | static inline void PIT_DisableInterrupts(PIT_Type *base, pit_chnl_t channel, uint32_t mask) |
AnnaBridge | 145:64910690c574 | 195 | { |
AnnaBridge | 145:64910690c574 | 196 | base->CHANNEL[channel].TCTRL &= ~mask; |
AnnaBridge | 145:64910690c574 | 197 | } |
AnnaBridge | 145:64910690c574 | 198 | |
AnnaBridge | 145:64910690c574 | 199 | /*! |
AnnaBridge | 145:64910690c574 | 200 | * @brief Gets the enabled PIT interrupts. |
AnnaBridge | 145:64910690c574 | 201 | * |
AnnaBridge | 145:64910690c574 | 202 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 203 | * @param channel Timer channel number |
AnnaBridge | 145:64910690c574 | 204 | * |
AnnaBridge | 145:64910690c574 | 205 | * @return The enabled interrupts. This is the logical OR of members of the |
AnnaBridge | 145:64910690c574 | 206 | * enumeration ::pit_interrupt_enable_t |
AnnaBridge | 145:64910690c574 | 207 | */ |
AnnaBridge | 145:64910690c574 | 208 | static inline uint32_t PIT_GetEnabledInterrupts(PIT_Type *base, pit_chnl_t channel) |
AnnaBridge | 145:64910690c574 | 209 | { |
AnnaBridge | 145:64910690c574 | 210 | return (base->CHANNEL[channel].TCTRL & PIT_TCTRL_TIE_MASK); |
AnnaBridge | 145:64910690c574 | 211 | } |
AnnaBridge | 145:64910690c574 | 212 | |
AnnaBridge | 145:64910690c574 | 213 | /*! @}*/ |
AnnaBridge | 145:64910690c574 | 214 | |
AnnaBridge | 145:64910690c574 | 215 | /*! |
AnnaBridge | 145:64910690c574 | 216 | * @name Status Interface |
AnnaBridge | 145:64910690c574 | 217 | * @{ |
AnnaBridge | 145:64910690c574 | 218 | */ |
AnnaBridge | 145:64910690c574 | 219 | |
AnnaBridge | 145:64910690c574 | 220 | /*! |
AnnaBridge | 145:64910690c574 | 221 | * @brief Gets the PIT status flags. |
AnnaBridge | 145:64910690c574 | 222 | * |
AnnaBridge | 145:64910690c574 | 223 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 224 | * @param channel Timer channel number |
AnnaBridge | 145:64910690c574 | 225 | * |
AnnaBridge | 145:64910690c574 | 226 | * @return The status flags. This is the logical OR of members of the |
AnnaBridge | 145:64910690c574 | 227 | * enumeration ::pit_status_flags_t |
AnnaBridge | 145:64910690c574 | 228 | */ |
AnnaBridge | 145:64910690c574 | 229 | static inline uint32_t PIT_GetStatusFlags(PIT_Type *base, pit_chnl_t channel) |
AnnaBridge | 145:64910690c574 | 230 | { |
AnnaBridge | 145:64910690c574 | 231 | return (base->CHANNEL[channel].TFLG & PIT_TFLG_TIF_MASK); |
AnnaBridge | 145:64910690c574 | 232 | } |
AnnaBridge | 145:64910690c574 | 233 | |
AnnaBridge | 145:64910690c574 | 234 | /*! |
AnnaBridge | 145:64910690c574 | 235 | * @brief Clears the PIT status flags. |
AnnaBridge | 145:64910690c574 | 236 | * |
AnnaBridge | 145:64910690c574 | 237 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 238 | * @param channel Timer channel number |
AnnaBridge | 145:64910690c574 | 239 | * @param mask The status flags to clear. This is a logical OR of members of the |
AnnaBridge | 145:64910690c574 | 240 | * enumeration ::pit_status_flags_t |
AnnaBridge | 145:64910690c574 | 241 | */ |
AnnaBridge | 145:64910690c574 | 242 | static inline void PIT_ClearStatusFlags(PIT_Type *base, pit_chnl_t channel, uint32_t mask) |
AnnaBridge | 145:64910690c574 | 243 | { |
AnnaBridge | 145:64910690c574 | 244 | base->CHANNEL[channel].TFLG = mask; |
AnnaBridge | 145:64910690c574 | 245 | } |
AnnaBridge | 145:64910690c574 | 246 | |
AnnaBridge | 145:64910690c574 | 247 | /*! @}*/ |
AnnaBridge | 145:64910690c574 | 248 | |
AnnaBridge | 145:64910690c574 | 249 | /*! |
AnnaBridge | 145:64910690c574 | 250 | * @name Read and Write the timer period |
AnnaBridge | 145:64910690c574 | 251 | * @{ |
AnnaBridge | 145:64910690c574 | 252 | */ |
AnnaBridge | 145:64910690c574 | 253 | |
AnnaBridge | 145:64910690c574 | 254 | /*! |
AnnaBridge | 145:64910690c574 | 255 | * @brief Sets the timer period in units of count. |
AnnaBridge | 145:64910690c574 | 256 | * |
AnnaBridge | 145:64910690c574 | 257 | * Timers begin counting from the value set by this function until it reaches 0, |
AnnaBridge | 145:64910690c574 | 258 | * then it generates an interrupt and load this register value again. |
AnnaBridge | 145:64910690c574 | 259 | * Writing a new value to this register does not restart the timer. Instead, the value |
AnnaBridge | 145:64910690c574 | 260 | * is loaded after the timer expires. |
AnnaBridge | 145:64910690c574 | 261 | * |
AnnaBridge | 145:64910690c574 | 262 | * @note Users can call the utility macros provided in fsl_common.h to convert to ticks. |
AnnaBridge | 145:64910690c574 | 263 | * |
AnnaBridge | 145:64910690c574 | 264 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 265 | * @param channel Timer channel number |
AnnaBridge | 145:64910690c574 | 266 | * @param count Timer period in units of ticks |
AnnaBridge | 145:64910690c574 | 267 | */ |
AnnaBridge | 145:64910690c574 | 268 | static inline void PIT_SetTimerPeriod(PIT_Type *base, pit_chnl_t channel, uint32_t count) |
AnnaBridge | 145:64910690c574 | 269 | { |
AnnaBridge | 145:64910690c574 | 270 | base->CHANNEL[channel].LDVAL = count; |
AnnaBridge | 145:64910690c574 | 271 | } |
AnnaBridge | 145:64910690c574 | 272 | |
AnnaBridge | 145:64910690c574 | 273 | /*! |
AnnaBridge | 145:64910690c574 | 274 | * @brief Reads the current timer counting value. |
AnnaBridge | 145:64910690c574 | 275 | * |
AnnaBridge | 145:64910690c574 | 276 | * This function returns the real-time timer counting value, in a range from 0 to a |
AnnaBridge | 145:64910690c574 | 277 | * timer period. |
AnnaBridge | 145:64910690c574 | 278 | * |
AnnaBridge | 145:64910690c574 | 279 | * @note Users can call the utility macros provided in fsl_common.h to convert ticks to usec or msec. |
AnnaBridge | 145:64910690c574 | 280 | * |
AnnaBridge | 145:64910690c574 | 281 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 282 | * @param channel Timer channel number |
AnnaBridge | 145:64910690c574 | 283 | * |
AnnaBridge | 145:64910690c574 | 284 | * @return Current timer counting value in ticks |
AnnaBridge | 145:64910690c574 | 285 | */ |
AnnaBridge | 145:64910690c574 | 286 | static inline uint32_t PIT_GetCurrentTimerCount(PIT_Type *base, pit_chnl_t channel) |
AnnaBridge | 145:64910690c574 | 287 | { |
AnnaBridge | 145:64910690c574 | 288 | return base->CHANNEL[channel].CVAL; |
AnnaBridge | 145:64910690c574 | 289 | } |
AnnaBridge | 145:64910690c574 | 290 | |
AnnaBridge | 145:64910690c574 | 291 | /*! @}*/ |
AnnaBridge | 145:64910690c574 | 292 | |
AnnaBridge | 145:64910690c574 | 293 | /*! |
AnnaBridge | 145:64910690c574 | 294 | * @name Timer Start and Stop |
AnnaBridge | 145:64910690c574 | 295 | * @{ |
AnnaBridge | 145:64910690c574 | 296 | */ |
AnnaBridge | 145:64910690c574 | 297 | |
AnnaBridge | 145:64910690c574 | 298 | /*! |
AnnaBridge | 145:64910690c574 | 299 | * @brief Starts the timer counting. |
AnnaBridge | 145:64910690c574 | 300 | * |
AnnaBridge | 145:64910690c574 | 301 | * After calling this function, timers load period value, count down to 0 and |
AnnaBridge | 145:64910690c574 | 302 | * then load the respective start value again. Each time a timer reaches 0, |
AnnaBridge | 145:64910690c574 | 303 | * it generates a trigger pulse and sets the timeout interrupt flag. |
AnnaBridge | 145:64910690c574 | 304 | * |
AnnaBridge | 145:64910690c574 | 305 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 306 | * @param channel Timer channel number. |
AnnaBridge | 145:64910690c574 | 307 | */ |
AnnaBridge | 145:64910690c574 | 308 | static inline void PIT_StartTimer(PIT_Type *base, pit_chnl_t channel) |
AnnaBridge | 145:64910690c574 | 309 | { |
AnnaBridge | 145:64910690c574 | 310 | base->CHANNEL[channel].TCTRL |= PIT_TCTRL_TEN_MASK; |
AnnaBridge | 145:64910690c574 | 311 | } |
AnnaBridge | 145:64910690c574 | 312 | |
AnnaBridge | 145:64910690c574 | 313 | /*! |
AnnaBridge | 145:64910690c574 | 314 | * @brief Stops the timer counting. |
AnnaBridge | 145:64910690c574 | 315 | * |
AnnaBridge | 145:64910690c574 | 316 | * This function stops every timer counting. Timers reload their periods |
AnnaBridge | 145:64910690c574 | 317 | * respectively after the next time they call the PIT_DRV_StartTimer. |
AnnaBridge | 145:64910690c574 | 318 | * |
AnnaBridge | 145:64910690c574 | 319 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 320 | * @param channel Timer channel number. |
AnnaBridge | 145:64910690c574 | 321 | */ |
AnnaBridge | 145:64910690c574 | 322 | static inline void PIT_StopTimer(PIT_Type *base, pit_chnl_t channel) |
AnnaBridge | 145:64910690c574 | 323 | { |
AnnaBridge | 145:64910690c574 | 324 | base->CHANNEL[channel].TCTRL &= ~PIT_TCTRL_TEN_MASK; |
AnnaBridge | 145:64910690c574 | 325 | } |
AnnaBridge | 145:64910690c574 | 326 | |
AnnaBridge | 145:64910690c574 | 327 | /*! @}*/ |
AnnaBridge | 145:64910690c574 | 328 | |
AnnaBridge | 145:64910690c574 | 329 | #if defined(FSL_FEATURE_PIT_HAS_LIFETIME_TIMER) && FSL_FEATURE_PIT_HAS_LIFETIME_TIMER |
AnnaBridge | 145:64910690c574 | 330 | |
AnnaBridge | 145:64910690c574 | 331 | /*! |
AnnaBridge | 145:64910690c574 | 332 | * @brief Reads the current lifetime counter value. |
AnnaBridge | 145:64910690c574 | 333 | * |
AnnaBridge | 145:64910690c574 | 334 | * The lifetime timer is a 64-bit timer which chains timer 0 and timer 1 together. |
AnnaBridge | 145:64910690c574 | 335 | * Timer 0 and 1 are chained by calling the PIT_SetTimerChainMode before using this timer. |
AnnaBridge | 145:64910690c574 | 336 | * The period of lifetime timer is equal to the "period of timer 0 * period of timer 1". |
AnnaBridge | 145:64910690c574 | 337 | * For the 64-bit value, the higher 32-bit has the value of timer 1, and the lower 32-bit |
AnnaBridge | 145:64910690c574 | 338 | * has the value of timer 0. |
AnnaBridge | 145:64910690c574 | 339 | * |
AnnaBridge | 145:64910690c574 | 340 | * @param base PIT peripheral base address |
AnnaBridge | 145:64910690c574 | 341 | * |
AnnaBridge | 145:64910690c574 | 342 | * @return Current lifetime timer value |
AnnaBridge | 145:64910690c574 | 343 | */ |
AnnaBridge | 145:64910690c574 | 344 | uint64_t PIT_GetLifetimeTimerCount(PIT_Type *base); |
AnnaBridge | 145:64910690c574 | 345 | |
AnnaBridge | 145:64910690c574 | 346 | #endif /* FSL_FEATURE_PIT_HAS_LIFETIME_TIMER */ |
AnnaBridge | 145:64910690c574 | 347 | |
AnnaBridge | 145:64910690c574 | 348 | #if defined(__cplusplus) |
AnnaBridge | 145:64910690c574 | 349 | } |
AnnaBridge | 145:64910690c574 | 350 | #endif |
AnnaBridge | 145:64910690c574 | 351 | |
AnnaBridge | 145:64910690c574 | 352 | /*! @}*/ |
AnnaBridge | 145:64910690c574 | 353 | |
AnnaBridge | 145:64910690c574 | 354 | #endif /* _FSL_PIT_H_ */ |